After installing the plug-in, queue up any video in Google or YouTube, then click the newly added ZuneIt button in IE's toolbar. Zunemytube downloads the video, converts it to WMV format, then deposits it in your My Videos folder—ready for syncing the next time you fire up the Zune software. Actually, you can copy this video to just about any Windows Media-compatible portable player.

Brilliant! Now you can watch OK Go's amazing "treadmill dance" video (among others) anytime, anywhere. Here's hoping the developer is working on a Firefox version of the plug-in. For now, Zunemytube (which is free) is IE-only.